JP2007261669A - Elevating cam mechanism of filling chute of rotary automatic packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary automatic packaging machine capable of preventing an automatic packaging machine main body or factory environments from getting contaminated with a scatter of contents. <P>SOLUTION: The rotary automatic packaging machine serves as an automatic packaging machine 1 for making side seals 124 on a two-fold packaging film 121 while rotating and carrying the film approximately horizontally, filling the contents in a packaging bag 122 between the side seals 124 and continuously making numerous packages. It includes an intermediate chute 71 for dropping the contents and the filling chute 61 for filling the contents received from the intermediate chute 71 into the packaging bag 122. The filling chute 61 is inserted into the packaging bag 122 for filling the bag 122 with the contents, and rises toward the intermediate chute 71 when filling the bag 122 with the contents. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a rotary automatic packaging machine that manufactures a packaging body in which a bag portion of a packaging film is filled with the contents of a powder, and particularly relates to a lifting cam mechanism that raises and lowers a filling chute.

  2. Description of the Related Art Conventionally, there is a rotary automatic packaging machine as an automatic packaging machine that uses a long resin film (packaging film) to divide and package contents such as a fixed amount of powder into a large number of packaging bodies. In this rotary automatic packaging machine, a long resin film is unwound from a film coil, folded with a film guide while moving the resin film in the horizontal direction, and introduced into the turntable. A number of side heat seal bars arranged around the turntable are held while forming width seals (side seals) at regular intervals on the introduced resin film. And the packaging bag divided | segmented by the width seal between the resin films folded in order is formed.

  A large number of filling chutes are inserted into the packaging bag between the side heat seal bars adjacent to each other, and a predetermined amount of contents are filled into the packaging bag from the filling chutes. After filling, the filling chute is removed and the side heat seal bar forming the width seal is removed from the resin film. The packaging bag filled with the contents is transferred through the guide, the preheat seal bar heats the upper edge thereof, and the top seal roller heat seals (top seal) the heated upper edge. This heat seal seals the contents in a packaging bag. Thereafter, the width seal portion is cut or perforated. Thereby, a resin film becomes a required packaging form. Such conventional rotary type automatic packaging machines are disclosed in, for example, Patent Document 1, Patent Document 2, and the like.

  The filling chute for filling the contents moves up and down while turning between the side heat seal bars. The filling chute is pivotally supported by a support column, and a cam follower mechanism is connected to the support column. The cam follower mechanism is in contact with the lifting cam mechanism. Such cam follower mechanism and elevating cam mechanism are constituted by an elevating cam structure for elevating and lowering the filling chute and a turning cam structure for rotating the filling chute.

The filling chute is inserted into the packaging bag and enters under the turntable for feeding the content. Therefore, the elevating cam structure is composed of a part for lowering the filling chute to fill the contents and a part for raising the filling chute to exit from the bottom of the rotating disk after filling the contents. .
For this reason, when the contents fall from the rotating disk, the contents are scattered from the gap between the rotating disk and the filling chute. This causes problems such as contamination of the main body of the rotary automatic packaging machine and contamination of the installed factory environment.
JP 2001-199402 A JP 2001-122208 A

As described above, the conventional rotary automatic packaging machine has a problem that the contents are scattered outside the filling chute and the contents of the automatic packaging machine and the factory environment are contaminated by the scattering of contents.
The present invention has been made to solve such problems, and provides a rotary automatic packaging machine capable of preventing the main body of the automatic packaging machine and the factory environment from being contaminated by scattering of contents. For the purpose.

  The rotary automatic wrapping machine according to the present invention applies a side seal in the width direction to the folded wrapping film while rotating and transferring substantially horizontally, and drops the contents into the packaging bag between the side seals and fills it. A rotary automatic packaging machine that continuously forms a large number of packages by applying a top seal to the upper end of the packaging bag, the supply mechanism for dropping the contents, and the contents received from the supply mechanism A filling mechanism for filling the packaging bag between the side seals, and the filling mechanism is configured to raise and lower the filling chute for inserting the contents received from the supply mechanism into the packaging bag and to insert the filling chute into the packaging bag. The cam has a cam follower and a cam, and the cam raises the filling chute toward the supply mechanism when the filling chute puts the contents into the packaging bag. With such a configuration, the contents can be prevented from scattering outside the filling chute, and the automatic packaging machine main body and the factory environment can be prevented from being contaminated by the scattered contents.

  Preferably, the cam raises the filling chute so as to overlap the drop opening of the supply mechanism. As a result, the contents can be reliably put into the filling chute, so that the automatic packaging machine main body and the factory environment can be reliably prevented from being contaminated by the scattering of the contents.

  Further, the supply mechanism has a supply device for dropping the contents, and an intermediate chute that once receives the dropped contents and accurately guides it to the filling chute, and the cam overlaps the inlet of the intermediate chute with the cam. Raise to match. As a result, the contents from the supply mechanism can be reliably put into the filling chute, so that it is possible to more reliably prevent the automatic packaging machine body and the factory environment from being contaminated by the scattering of the contents.

  ADVANTAGE OF THE INVENTION According to this invention, the rotary automatic packaging machine which can prevent that an automatic packaging machine main body and a factory environment are contaminated by the scattering of the contents can be provided.

In the rotary automatic packaging machine according to the embodiment of the present invention, when the contents are put into the packaging bag, the filling chute of the filling chute mechanism is moved up and down to reliably fill the packaging bag with the contents.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the overall configuration of the rotary automatic packaging machine according to the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view showing a rotary automatic packaging machine according to the present invention, and FIG. 2 is a schematic top view showing an essential part thereof. The rotary automatic packaging machine 1 according to the present invention shown in FIG.

  As shown in FIG. 1, the automatic packaging machine 1 pulls out the packaging film 121 from the film coil 120 while applying back tension to the packaging film 121 by the coil rewinding reel 2. The drawn packaging film 121 continuously flows upward in the figure, and is bent into two in a substantially U shape at the center by the film guide 3. As shown in FIG. 2, the folded packaging film 121 is introduced into the turntable 4 from the tangential direction.

  On the turntable 4, the sealing bar 51 of the side seal mechanism 5 is disposed at a predetermined distance, and the filling chute 61 of the filling mechanism 6 is disposed so as to be movable up and down at an intermediate position between these sealing bars 51. When the bi-fold packaging film 121 is sent to the turntable 4, the filling chute 61 is lowered and inserted into the bi-fold packaging film 121 between the sealing bars 51. The sealing bar 51 sandwiches the folded packaging film 121 in the width direction in a state where the filling chute 61 is inserted.

  The sealing bar 51 of the side seal mechanism 5 performs heat sealing in the width direction of the packaging film 121 to locally melt the heat sealing film. As a result, the melted heat seal films of the two-fold packaging film 121 are pressure-bonded to form a side seal 124. As a result, a plurality of packaging bags 122 sandwiched between the side seals 124 are formed in the folded packaging film 121.

  The supply mechanism 7 rotates a rotating container (not shown) horizontally and places the intermediate chute 71 on the filling chute 61. The supply mechanism 7 opens an opening / closing plate (not shown) below the bottom of the rotating container when the rotating container is disposed at a predetermined position. As a result, the lower end surface of the basket (not shown) in the rotary container is opened, and a predetermined amount of the contents in the basket falls to the intermediate chute 71 and falls to the filling chute 61 through the intermediate chute 71. Since the filling chute 61 is inserted into the packaging bag 122 formed between the side seals 124, the contents dropped on the filling chute 61 are filled into the packaging bag 122.

  As shown in FIG. 2, the packaging bag 122 filled with the contents rotates counterclockwise in the figure by the rotation operation of the turntable 4. The packaging bag 122 rotated and transferred by the turntable 4 is linearly transferred to the top seal mechanism 9 by the guide roller 8. When the preheating seal bar 90 of the top seal mechanism 9 heats the upper edge of the packaging bag 122, the heat seal film on the upper edge of the packaging bag 122 is melted. The pair of top sealers 91 pressurize the upper edge of the melted packaging bag 122 so that the heat seal films on the upper edge are pressure-bonded. Thereby, the top seal | sticker 125 is formed and the packaging bag 122 is sealed.

  Thereafter, the packaging bag 122 is sent to the notch mechanism 10 by the extrusion of the top seal roller 92. The notch mechanism 10 sandwiches the top seal 125 of the packaging bag 122 with the notch guide 100 and partially cuts the top seal 125 with the notch cutter 101. Thereby, a notch is made in the top seal 125 of the packaging bag 122. The cutter mechanism 11 cuts the side seal 124 or perforates the side seal 124. Thereby, the plurality of packaging bags 122 are packaged in the package 123 that packages the contents.

Next, a cam mechanism for raising and lowering the filling chute 61 in the automatic packaging machine 1 according to the present invention will be described in detail with reference to FIGS.
FIG. 3 shows an example of the configuration of the lifting cam of the automatic packaging machine 1 according to the present invention. FIG. 3 (a) is a schematic top view and FIG. 3 (b) is a schematic side view.
As shown in FIG. 3A, the elevating cam 30 is constituted by a donut-shaped block having a width and a thickness, and has a donut-like shape in a top view so that the filling chute 61 turns along the turntable 4. . The elevating cam 30 is a cam for elevating and lowering the filling chute 61 in each area of the turntable 4. The elevating cam 30 moves up and down while turning the filling chute 61 along the turntable 4 and slightly raises and lowers the filling chute 61 in the region where the contents are dropped.

  Specifically, the elevating cam 30 lowers the filling chute 61 in the introduction region where the packaging film 121 is introduced, and maintains the state where the filling chute 61 is lowered in the seal region where the side seal 124 is formed. In this sealing area, the elevating cam 30 moves the filling chute 61 closer to the intermediate chute 71 in the filling area where the contents are dropped and filled in the packaging bag 122, or returns from this state. The raising / lowering cam 30 raises the filling chute 61 in the lead-out region where the packaging bag 122 filled with the contents is sent to the top seal mechanism 9, and the filling chute 61 is raised in the preparation region from the lead-out region to the introduction region. maintain.

As shown in FIG. 3B, the elevating cam 30 has a descending inclined part 311, a flat part 312, an ascending inclined part 313, and a flat part 314.
The descending inclined portion 311 is a portion that is smoothly inclined downward when observed from the side surface, and is disposed in the introduction region. The ascending inclined portion 313 is a portion that is smoothly inclined upward as viewed from the side, and is disposed in the lead-out area. The flat portions 312 and 314 are portions that are flat when viewed from the side surface, and are portions that connect the inclined portions 311 and 313. Specifically, the flat portion 312 is a longer portion of the arc portions connecting the inclined portions 311 and 313, and is disposed in the seal region. On the other hand, the flat portion 314 is a shorter portion of the arc portions connecting the inclined portions 311 and 313, and is disposed in the preparation area.

The elevating cam 30 has an up block 321 and a down block 322 for moving the filling chute 61 up and down slightly in the filling region. These blocks 321 and 322 are provided in the flat portion 312, and both have a substantially trapezoidal shape when viewed from the side, and form a smooth step that rises and falls temporarily in the middle of the flat portion 312. Accordingly, each of the blocks 321 and 322 functions as an ascending portion that raises the filling chute 61 and a descending portion that lowers the filling chute.
Specifically, the ascending block 321 is disposed on the descending slope 311 side, and constitutes an ascending slope in the middle part of the flat part 312. On the other hand, the descending block 322 is disposed on the ascending slope portion 313 side, and constitutes a descending slope in the middle portion of the flat portion 312. Here, the ascending amount by the ascending block 321 and the descending amount by the descending block 322 are smaller than the descending amount from the flat portion 314 to the flat portion 312 and the ascending amount from the flat portion 312 to the flat portion 314. The flat portion 312 is slightly raised at the arrangement position.
Each of the blocks 321 and 322 is fixed so that its position can be adjusted along the arc of the elevating cam 30 constituted by a donut-shaped block. Therefore, the position where the filling chute 61 moves up and down can be easily adjusted by adjusting the arrangement positions of the blocks 321 and 322.

  In such an elevating cam 30, the filling chute 61 is inserted into the bi-fold packaging film 121 by descending at the descending inclined portion 311. The lowered filling chute 61 turns while being inserted into the packaging bag 122 at the flat portion 312. Meanwhile, the packaging bag 122 is filled with the contents, and the filling chute 61 rises so as to close the gap with the intermediate chute 71 by the rising block 321 at that time. When the filling of the contents is completed, the filling chute 61 descends so as to return to the original state from the state where the gap with the intermediate chute 71 is closed by the descending block 322. When the packaging bag 122 is sent from the turntable 4, the filling chute 61 rises at the rising slope 313 and is extracted from the packaging bag 122. Thereafter, the filling chute 61 moves in a state where it rises at the flat portion 314.

Next, a cam mechanism for raising and lowering the filling chute 61 of the automatic packaging machine 1 according to the present invention will be described in detail with reference to FIG. FIG. 4 is a schematic side view showing the cam mechanism of the filling chute 61. Here, in FIG. 4, main portions of the plurality of filling chutes 61 that turn in a substantially circular shape on the turntable 4 are shown, and correspondence of members separated by dotted lines is shown.
As shown in FIG. 4, the filling chute 61 is supported via a support plate 612 that protrudes horizontally from the column 611. An elevating cam follower 613 for elevating the filling chute 61 is connected to the middle part of the column 611 and is placed on the upper surface of the elevating cam 30. A swivel plate 614 is connected to the lower end of the column 611, and a swivel cam follower 615 for turning the filling chute 61 is fixed to the swivel plate 614. The turning cam follower 615 is inserted into a turning cam 616 provided below the automatic packaging machine 1.

  In such a cam mechanism, when the turning cam follower 615 turns along the turning cam 616, the turning plate 614 connected to the turning cam follower 615 turns. Since the support column 611 connected to the swivel plate 614 rotates accordingly, the support plate 612 projecting from the support plate 612 rotates, and the filling chute 61 connected to the support plate 612 rotates. At this time, the elevating cam follower 613 moves the support column 611 up and down along the upper surface shape of the elevating cam 30. Thereby, the filling chute 61 moves up and down along the upper surface of the lifting cam 30.

  More specifically, the operation of the filling chute 61 will be described. The elevating cam follower 613 moves the descending inclined portion 311 in the introduction region after moving the flat portion 314 in the preparation region. The elevating cam follower 613 smoothly descends according to the shape of the descending inclined portion 311, and the filling chute 61 descends smoothly. Thereby, the filling chute 61 is inserted between the packaging films 121 folded in two.

  The elevating cam follower 613 moves on the flat portion 312 in the seal region after descending the descending inclined portion 311. At this time, the filling chute 61 maintains a state where it is inserted into the folded packaging film 121. At this time, the intermediate chute 71 is rotatable because it is away from the filling port of the filling chute 61 into which the contents are thrown, and is disposed on the filling chute 61 to fill the packaging bag 122 with the contents. . The elevating cam follower 613 further moves on the flat portion 312 and goes up the ascending block 321 in the filling region. Accordingly, the filling chute 61 rises while approaching the intermediate chute 71. As a result, the lower end of the intermediate chute 71 is inserted into the charging port of the filling chute 61. In other words, the inlet of the intermediate chute 71 that guides the contents to the filling chute 61, that is, the inlet of the supply mechanism 7 that drops the contents overlaps the inlet of the filling chute 61.

  When the ascending / descending cam follower 613 smoothly climbs the up block 321, it moves on the down block 322 through the up block 321. The filling chute 61 rotates along the turntable 4 while maintaining a state in which the lower end of the intermediate chute 71 is inserted into the charging port. During this time, the contents are discharged from the intermediate chute 71 to the filling chute 61 and filled into the packaging bag 122 through the filling chute 61.

  When the elevating cam follower 613 starts to smoothly descend the descending block 322, the filling chute 61 descends away from the intermediate chute 71 in the direction opposite to the intermediate chute 71. When the elevating cam follower 613 passes the filling region, the lower end of the intermediate chute 71 is extracted from the filling port of the filling chute 61, and the state of insertion into the filling port is released. At this time, since the intermediate chute 71 is extracted from the filling port of the filling chute 61, it can be rotated away from the filling port. Further, since the operation of charging the contents into the packaging bag 122 is completed, the contents are not discharged from the intermediate chute 71.

  When the elevating cam follower 613 moves on the flat portion 312 again in the sealing region, the filling chute 61 turns while being inserted into the packaging bag 122 filled with the contents. As the elevating cam follower 613 moves up the elevating inclined portion 313 in the lead-out area, the filling chute 61 rises and is extracted from the packaging bag 122. Since the raising / lowering cam follower 613 moves the flat portion 314 in the preparation region, the rising filling chute 61 moves to a newly introduced state while maintaining the raised state.

  As described above, in the automatic packaging machine 1 according to the present invention, the filling chute 61 is inserted into the inlet of the filling chute 61 when the intermediate chute 71 discharges the contents. Therefore, even if the contents are discharged from the lower end of the intermediate chute 71, the contents are discharged from the filling port of the filling chute 61. Therefore, the contents can be prevented from scattering outside the filling chute 61, and the main body of the automatic packaging machine 1 and the factory can be prevented from being contaminated by the contents.

In the present embodiment, the elevating cam 30 is constituted by a donut-shaped block, but is not limited thereto, and may be constituted by a groove cam. Specifically, the block as described above may be provided in a portion where the filling chute 61 is filled with the contents, and the filling chute 61 may be slightly moved up and down.
In the present embodiment, the case where the intermediate chute 71 is provided under the rotating disk of the supply mechanism 7 has been described. However, the present invention is also applicable to the case where the intermediate chute 71 is not provided. Specifically, when dropping the contents, the filling chute 61 may be brought close to the rotating disk as in the present embodiment.

It is a front view which shows the whole structure of the rotary type automatic packaging machine which concerns on this invention. It is a plane schematic diagram which shows the principal part of the rotary type automatic packaging machine which concerns on this invention. It is a figure which shows the example of 1 structure of the raising / lowering cam of the rotary type automatic packaging machine which concerns on this invention. It is a schematic diagram which shows operation | movement of the raising / lowering cam of the rotary type automatic packaging machine which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rotary type automatic packaging machine, 2 ... Rewinding reel, 3 ... Film guide,
4 ... turntable, 5 ... side seal mechanism, 51 ... side heat seal bar,
6 ... filling mechanism, 61 ... filling chute, 7 ... supply mechanism, 71 ... intermediate chute,
8 ... Guide roll, 9 ... Top seal mechanism, 91 ... Preheat seal bar,
92 ... Top seal roller, 10 ... Notch mechanism, 100 ... Notch guide,
DESCRIPTION OF SYMBOLS 101 ... Notch cutter, 11 ... Cutter mechanism 120 ... Film coil, 121 ... Packaging film, 122 ... Packaging bag, 123 ... Packaging body, 124 ... Side seal, 125 ... Top seal 30 ... Lifting cam, 311 ... Downward inclined part, 312 ... Flat part, 313 ... Elevating slope part,
314 ... Flat part, 321 ... Up block, 322 ... Down block 611 ... Post, 612 ... Support plate, 613 ... Elevating cam follower, 614 ... Swivel plate,
615 ... Rotating cam follower, 616 ... Rotating cam

Claims (3)

A side seal is applied to the folded wrapping film while rotating and transporting substantially horizontally, and the top seal is applied to the upper end of the packaging bag after the contents are dropped and filled in the packaging bag between the side seals. Is a rotary automatic packaging machine that continuously produces a large number of packages,
A supply mechanism for dropping the contents;
A filling mechanism for filling the packaging bag between the side seals with the contents received from the supply mechanism,
The filling mechanism has a filling chute for charging the contents received from the supply mechanism into the packaging bag, and a cam follower and a cam for raising and lowering the filling chute into the packaging bag,
The cam is a rotary automatic packaging machine that raises the filling chute toward the supply mechanism when the filling chute puts the contents into the packaging bag.   The rotary automatic packaging machine according to claim 1, wherein the cam raises the filling chute so as to overlap the drop port of the supply mechanism. The supply mechanism has a supply device for dropping contents, and an intermediate chute that once receives the dropped contents and accurately guides it to a filling chute,
The rotary automatic packaging machine according to claim 1 or 2, wherein the cam raises the filling chute so as to overlap the inlet of the intermediate chute.

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